A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5930-01-040-7703
NSN 6645-00-225-2742
NSN 5999-01-122-4319
NSN 5935-01-540-5557
NSN 6130-01-143-0203
NSN 6105-01-068-3045
NSN 5910-00-596-2676
NSN 5920-01-040-7718
NSN 6130-00-236-5085
NSN 5975-01-155-3270
NSN 5915-01-050-9080
NSN 5996-01-592-3011